BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: spike123 on 07 Dec, 2020, 04:09

Title: Crankshaft
Post by: spike123 on 07 Dec, 2020, 04:09
Hi guys
If I want to get a crankshaft and there's a few on eBay how do I know what to look for are there numbers on the crank that relate to part numbers
Mark
Title: Re: Crankshaft
Post by: Ian C on 07 Dec, 2020, 09:56
What model and year crankcases do you have?
Title: Re: Crankshaft
Post by: spike123 on 07 Dec, 2020, 21:24
1969
Title: Re: Crankshaft
Post by: Nanonevol on 08 Dec, 2020, 13:18
We still don't know the model but online buying can be risky. 
Photos should show threads on the ends, and any balancing done to the flywheel but I would try to find out the size and condition of the big end journals and bearing journals. 
Title: Re: Crankshaft
Post by: spike123 on 12 Dec, 2020, 10:15
hi
the set of crankcases belong to a 66 spitfire and a set of 70 cases